{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x394717a44ca61df33a48f157555402d37b2e7b5bc60d6a76e6069df72cc8c819",
    "signature": "0x6896c37653fce6394b6f92da3329c81d703af60780a84ff3faab5906d11ce3542f5588669f30e392cf0c4b8711354da4355e3d3a20600f1f8b9e22b9d308c0a51b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}